JSFiddle - React, Tailwind, and code Playground
HTML
<select id="Task" onchange="function1(this);">
<option value="1">1</option>
<option value="2">2</option>
</select>
JavaScript
function function1(x){alert(x.value)};
<select id="Task" onchange="function1(this);">
<option value="1">1</option>
<option value="2">2</option>
</select>
function function1(x){alert(x.value)};